Need to drain last bit of power from accessories lights radio anything powered turn off key disconnect both the negative cable first then positive and preferably place some type of protection over battery cardboard would work. Touch both the terminals together and leave them at least 10 minutes or I have went overnight. Replace cables positive first and start engine your light will be off if there's a problem detected the light will come back on.
SOURCE: 'service engine soon' light
HI
without using the scan tool you can do it by disconnected the the battery for ( 24 h) to reset it or to ( 5 m) to reset the service engine light but the fault sty in the memory
WITH MY BEST WISHES
SOURCE: service engine soon light 04 nissan titan
make sure the gas cap is tightly sealed. Inspect the gasket on the gas cap
SOURCE: service engine soon light
The light comes on when the car's computer detects that something has an incorrect reading that is sending that incorrect reading from the sensing unit to the computer.
Here's how i would attempt to solve it. To reset an service engine soon light take the positive terminal off of the battery and let it drain all the voltage and currents in your vehicle. Like try turning on your radio and turning your car over while the positive terminal is taken off of the battery terminal.
I would say let it sit for atleast 15 minutes then put it back on and start the car back up. If the light still comes back one then you have a small problem that could be many different little things
Check to see that your gas cap isn't worn out and still keeping a seal so when you take it off you should hear air escaping from it
Could be a filter in your fuel tank.
Could be o2 sensors
The list could go on, but to make sure before you start spending a huge amounts of money go to a shop and get them to plug in a scanner into your car to see what exactly the code is.
Good luck bud!
SOURCE: light just came on: service engine soon... 2005
Just take it to a shop and have somebody look at it. It could just be maintenance that needs to be done. When was the last time the oil was changed? Newer cars are programmed to turn that light on at specific intervals to ensure proper and timely maintenance is performed.
SOURCE: How do i reset Engine Service Soon light
I hear that these answers are correct. But, not in California-state law, or so I've been told by the chain stores.
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